Thus, each lame "celebration" for Ultra-house party!

Now have these boxes for about 5 months, until now had no problems. I had brought these boxes with 2 home parties and that have rocked the party;) The subwoofer indeed comes in comparison to its predecessor Z4 not ran (the subwoofer of the Z4 was a lot better, stronger, more voluminous), nevertheless with proper equalizer setting example on PC (VLC or Media Player) you can pick out the bass even stuff (!). I am completely satisfied with these boxes, using with me every day as yet no part of the 7-8h and have "wear" (but I must also add, I belong to the people, do not perceive the high noise, therefore, I make no statement as to whether the boxes emit high frequency sounds).